There is something innately fascinating about knowing where we came from, whether it is studying human fossils or our own family tree. For those of us who are lucky enough to have met our older relatives, we feel we’ve gotten the inside scoop on what happened in the past – but not always.

Someone on Twitter asked “What’s the deep dark family secret that you learned as an adult,” and the response one user gave shows sometimes we don’t know our families as well as we think we do. Twitter user @AngryManTv said it was at his grandfather’s funeral that he learned the amazing true story behind his grandfather’s mysterious prior career. Scroll down below to read the full Twitter thread and learn his shocking secret!

Someone asked this question on Twitter

And the response this guy gave belongs in a movie

People in the comments were in awe and agreed it was screenplay-worthy